Inverse Trigonometric Functions
if x>0thentanh−1(x2+1x2−1 )
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Write the value of sin−1(cos9π).
cos−1(5+3cosx 3+5cosx )=
The value of ∣x∣→∞limcos(tan−1(sin(tan−1x))) is equal to
Fill in the blanks in the following:The result tan−1x−tan−1y=tan−1(1+xyx−y) is true when value of xy is .......
If (cos−1x)2+(cos−1y)2+2(cos−1x)(cos−1y)=4π2 then x2+y2 is equal to
Prove that: tan−1(21)+tan−1(51)+tan−1(81)=4π
Show that tan(21sin−143)=34−7 and justify why the other value 34+7 is isgnored?